which three of the following statements are true Which three of the following st
ID: 996532 • Letter: W
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which three of the following statements are true Which three of the following statements are true The tendency of water to minimize its contact with nonpolar substances is called the hydrophobic effect. Amphipathic (amphiphilic) lipids are the structural basis of biological bilayer membranes. Hydrophobic molecules are individually hydrated in water, increasing the entropy of the system. hydrophobic molecules do not readily dissolve in water in part because water molecules involved in hydration cannot participate in normal hydrogen bonding with one another. Polar molecules are capable of forming micelles.Explanation / Answer
The hydrophobic effect is the observed tendency of nonpolar substances to aggregate in aqueous solution and exclude watermolecules. This occurs because interactions between the hydrophobic molecules enable the displaced water molecules to make hydrogen bonds more freely with each other and increase the number of hydrogen bonds they are involved with, thereby decreasing the overall free energy. Therefore the first statement is correct.
Amphiphiles are molecules that have both hydrophobic and hydrophilic domains. Detergents are composed of amphiphiles that allow hydrophobic molecules to be solubilized in water by forming micelles and bilayers (as in soap bubbles). They are also important to cell membranes composed of amphiphilic phospholipids that prevent the internal aqueous environment of a cell from mixing with external water. Therefore the second statement is also correct.
The polar molecules do not form micelles, so this statement is false.
And the four statement is also true. so the third is false.
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